Derating 24v Solar Panels?
I'm considering running two 250w/24v poly panels; tracked/pointed during spring/fall, and flat during the summer; thru the Tracer 3215BN 30a mppt controller. I can also get 200w/24v mono panels, local...
Forum Discussion
The panels should derate themselves in the summer heat. If two 250s is too much at times, switch one of the 250s off?
Do you even need the extra AH in the summer? (not so much furnace and lights on less time with longer days)
Just get one 250 and another 140 12? IMO avoid 100w monos--low amps.
I derated my 130w panel for a time so I could run it temporarily with a 105w limit controller. Just tape over one cell in a corner and it knocks the panel down to about half. That was enough for the job at hand (maintain batts while away from rig for a few days)
Do you even need the extra AH in the summer? (not so much furnace and lights on less time with longer days)
Just get one 250 and another 140 12? IMO avoid 100w monos--low amps.
I derated my 130w panel for a time so I could run it temporarily with a 105w limit controller. Just tape over one cell in a corner and it knocks the panel down to about half. That was enough for the job at hand (maintain batts while away from rig for a few days)
